1 /**************************************************************************
3 * Copyright 2010 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Pixel format accessor functions.
32 * @author Jose Fonseca <jfonseca@vmware.com>
35 #include "util/format/u_format.h"
36 #include "util/format/u_format_s3tc.h"
37 #include "util/u_math.h"
39 #include "pipe/p_defines.h"
40 #include "pipe/p_screen.h"
44 * Copy 2D rect from one place to another.
45 * Position and sizes are in pixels.
46 * src_stride may be negative to do vertical flip of pixels from source.
49 util_copy_rect(ubyte
* dst
,
50 enum pipe_format format
,
62 int src_stride_pos
= src_stride
< 0 ? -src_stride
: src_stride
;
63 int blocksize
= util_format_get_blocksize(format
);
64 int blockwidth
= util_format_get_blockwidth(format
);
65 int blockheight
= util_format_get_blockheight(format
);
67 assert(blocksize
> 0);
68 assert(blockwidth
> 0);
69 assert(blockheight
> 0);
73 width
= (width
+ blockwidth
- 1)/blockwidth
;
74 height
= (height
+ blockheight
- 1)/blockheight
;
78 dst
+= dst_x
* blocksize
;
79 src
+= src_x
* blocksize
;
80 dst
+= dst_y
* dst_stride
;
81 src
+= src_y
* src_stride_pos
;
84 if (width
== dst_stride
&& width
== (unsigned)src_stride
)
85 memcpy(dst
, src
, height
* width
);
87 for (i
= 0; i
< height
; i
++) {
88 memcpy(dst
, src
, width
);
97 util_format_is_float(enum pipe_format format
)
99 const struct util_format_description
*desc
= util_format_description(format
);
107 i
= util_format_get_first_non_void_channel(format
);
112 return desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_FLOAT
? TRUE
: FALSE
;
116 /** Test if the format contains RGB, but not alpha */
118 util_format_has_alpha(enum pipe_format format
)
120 const struct util_format_description
*desc
=
121 util_format_description(format
);
123 return (desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
124 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
125 desc
->swizzle
[3] != PIPE_SWIZZLE_1
;
130 util_format_is_luminance(enum pipe_format format
)
132 const struct util_format_description
*desc
=
133 util_format_description(format
);
135 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
136 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
137 desc
->swizzle
[0] == PIPE_SWIZZLE_X
&&
138 desc
->swizzle
[1] == PIPE_SWIZZLE_X
&&
139 desc
->swizzle
[2] == PIPE_SWIZZLE_X
&&
140 desc
->swizzle
[3] == PIPE_SWIZZLE_1
) {
147 util_format_is_alpha(enum pipe_format format
)
149 const struct util_format_description
*desc
=
150 util_format_description(format
);
152 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
153 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
154 desc
->swizzle
[0] == PIPE_SWIZZLE_0
&&
155 desc
->swizzle
[1] == PIPE_SWIZZLE_0
&&
156 desc
->swizzle
[2] == PIPE_SWIZZLE_0
&&
157 desc
->swizzle
[3] == PIPE_SWIZZLE_X
) {
164 util_format_is_pure_integer(enum pipe_format format
)
166 const struct util_format_description
*desc
= util_format_description(format
);
169 /* Find the first non-void channel. */
170 i
= util_format_get_first_non_void_channel(format
);
174 return desc
->channel
[i
].pure_integer
? TRUE
: FALSE
;
178 util_format_is_pure_sint(enum pipe_format format
)
180 const struct util_format_description
*desc
= util_format_description(format
);
183 i
= util_format_get_first_non_void_channel(format
);
187 return (desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_SIGNED
&& desc
->channel
[i
].pure_integer
) ? TRUE
: FALSE
;
191 util_format_is_pure_uint(enum pipe_format format
)
193 const struct util_format_description
*desc
= util_format_description(format
);
196 i
= util_format_get_first_non_void_channel(format
);
200 return (desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_UNSIGNED
&& desc
->channel
[i
].pure_integer
) ? TRUE
: FALSE
;
204 * Returns true if the format contains normalized signed channels.
207 util_format_is_snorm(enum pipe_format format
)
209 const struct util_format_description
*desc
= util_format_description(format
);
211 return desc
->is_snorm
;
215 * Returns true if the format contains normalized unsigned channels.
218 util_format_is_unorm(enum pipe_format format
)
220 const struct util_format_description
*desc
= util_format_description(format
);
222 return desc
->is_unorm
;
226 util_format_is_snorm8(enum pipe_format format
)
228 const struct util_format_description
*desc
= util_format_description(format
);
234 i
= util_format_get_first_non_void_channel(format
);
238 return desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_SIGNED
&&
239 !desc
->channel
[i
].pure_integer
&&
240 desc
->channel
[i
].normalized
&&
241 desc
->channel
[i
].size
== 8;
245 util_format_is_luminance_alpha(enum pipe_format format
)
247 const struct util_format_description
*desc
=
248 util_format_description(format
);
250 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
251 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
252 desc
->swizzle
[0] == PIPE_SWIZZLE_X
&&
253 desc
->swizzle
[1] == PIPE_SWIZZLE_X
&&
254 desc
->swizzle
[2] == PIPE_SWIZZLE_X
&&
255 desc
->swizzle
[3] == PIPE_SWIZZLE_Y
) {
263 util_format_is_intensity(enum pipe_format format
)
265 const struct util_format_description
*desc
=
266 util_format_description(format
);
268 if ((desc
->colorspace
== UTIL_FORMAT_COLORSPACE_RGB
||
269 desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) &&
270 desc
->swizzle
[0] == PIPE_SWIZZLE_X
&&
271 desc
->swizzle
[1] == PIPE_SWIZZLE_X
&&
272 desc
->swizzle
[2] == PIPE_SWIZZLE_X
&&
273 desc
->swizzle
[3] == PIPE_SWIZZLE_X
) {
280 util_format_is_subsampled_422(enum pipe_format format
)
282 const struct util_format_description
*desc
=
283 util_format_description(format
);
285 return desc
->layout
== UTIL_FORMAT_LAYOUT_SUBSAMPLED
&&
286 desc
->block
.width
== 2 &&
287 desc
->block
.height
== 1 &&
288 desc
->block
.bits
== 32;
292 * Calculates the MRD for the depth format. MRD is used in depth bias
293 * for UNORM and unbound depth buffers. When the depth buffer is floating
294 * point, the depth bias calculation does not use the MRD. However, the
295 * default MRD will be 1.0 / ((1 << 24) - 1).
298 util_get_depth_format_mrd(const struct util_format_description
*desc
)
301 * Depth buffer formats without a depth component OR scenarios
302 * without a bound depth buffer default to D24.
304 double mrd
= 1.0 / ((1 << 24) - 1);
305 unsigned depth_channel
;
310 * Some depth formats do not store the depth component in the first
311 * channel, detect the format and adjust the depth channel. Get the
312 * swizzled depth component channel.
314 depth_channel
= desc
->swizzle
[0];
316 if (desc
->channel
[depth_channel
].type
== UTIL_FORMAT_TYPE_UNSIGNED
&&
317 desc
->channel
[depth_channel
].normalized
) {
320 depth_bits
= desc
->channel
[depth_channel
].size
;
321 mrd
= 1.0 / ((1ULL << depth_bits
) - 1);
329 util_format_read_4(enum pipe_format format
,
330 void *dst
, unsigned dst_stride
,
331 const void *src
, unsigned src_stride
,
332 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
334 const struct util_format_description
*format_desc
;
335 const uint8_t *src_row
;
337 format_desc
= util_format_description(format
);
339 assert(x
% format_desc
->block
.width
== 0);
340 assert(y
% format_desc
->block
.height
== 0);
342 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
344 format_desc
->unpack_rgba(dst
, dst_stride
, src_row
, src_stride
, w
, h
);
349 util_format_write_4(enum pipe_format format
,
350 const void *src
, unsigned src_stride
,
351 void *dst
, unsigned dst_stride
,
352 unsigned x
, unsigned y
, unsigned w
, unsigned h
)
354 const struct util_format_description
*format_desc
;
357 format_desc
= util_format_description(format
);
359 assert(x
% format_desc
->block
.width
== 0);
360 assert(y
% format_desc
->block
.height
== 0);
362 dst_row
= (uint8_t *)dst
+ y
*dst_stride
+ x
*(format_desc
->block
.bits
/8);
364 if (util_format_is_pure_uint(format
))
365 format_desc
->pack_rgba_uint(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
366 else if (util_format_is_pure_sint(format
))
367 format_desc
->pack_rgba_sint(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
369 format_desc
->pack_rgba_float(dst_row
, dst_stride
, src
, src_stride
, w
, h
);
374 util_format_read_4ub(enum pipe_format format
, uint8_t *dst
, unsigned dst_stride
, const void *src
, unsigned src_stride
, unsigned x
, unsigned y
, unsigned w
, unsigned h
)
376 const struct util_format_description
*format_desc
;
377 const uint8_t *src_row
;
380 format_desc
= util_format_description(format
);
382 assert(x
% format_desc
->block
.width
== 0);
383 assert(y
% format_desc
->block
.height
== 0);
385 src_row
= (const uint8_t *)src
+ y
*src_stride
+ x
*(format_desc
->block
.bits
/8);
388 format_desc
->unpack_rgba_8unorm(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
393 util_format_write_4ub(enum pipe_format format
, const uint8_t *src
, unsigned src_stride
, void *dst
, unsigned dst_stride
, unsigned x
, unsigned y
, unsigned w
, unsigned h
)
395 const struct util_format_description
*format_desc
;
397 const uint8_t *src_row
;
399 format_desc
= util_format_description(format
);
401 assert(x
% format_desc
->block
.width
== 0);
402 assert(y
% format_desc
->block
.height
== 0);
404 dst_row
= (uint8_t *)dst
+ y
*dst_stride
+ x
*(format_desc
->block
.bits
/8);
407 format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, src_row
, src_stride
, w
, h
);
411 * Check if we can safely memcopy from the source format to the dest format.
412 * This basically covers the cases of a "used" channel copied to a typeless
413 * channel, plus some 1-channel cases.
414 * Examples of compatible copy formats include:
415 * b8g8r8a8_unorm -> b8g8r8x8_unorm
416 * a8r8g8b8_unorm -> x8r8g8b8_unorm
417 * b5g5r5a1_unorm -> b5g5r5x1_unorm
418 * b4g4r4a4_unorm -> b4g4r4x4_unorm
419 * l8_unorm -> r8_unorm
420 * i8_unorm -> l8_unorm
421 * i8_unorm -> a8_unorm
422 * i8_unorm -> r8_unorm
423 * l16_unorm -> r16_unorm
424 * z24_unorm_s8_uint -> z24x8_unorm
425 * s8_uint_z24_unorm -> x8z24_unorm
426 * r8g8b8a8_unorm -> r8g8b8x8_unorm
427 * a8b8g8r8_srgb -> x8b8g8r8_srgb
428 * b8g8r8a8_srgb -> b8g8r8x8_srgb
429 * a8r8g8b8_srgb -> x8r8g8b8_srgb
430 * a8b8g8r8_unorm -> x8b8g8r8_unorm
431 * r10g10b10a2_uscaled -> r10g10b10x2_uscaled
432 * r10sg10sb10sa2u_norm -> r10g10b10x2_snorm
435 util_is_format_compatible(const struct util_format_description
*src_desc
,
436 const struct util_format_description
*dst_desc
)
440 if (src_desc
->format
== dst_desc
->format
) {
444 if (src_desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
||
445 dst_desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
) {
449 if (src_desc
->block
.bits
!= dst_desc
->block
.bits
||
450 src_desc
->nr_channels
!= dst_desc
->nr_channels
||
451 src_desc
->colorspace
!= dst_desc
->colorspace
) {
455 for (chan
= 0; chan
< 4; ++chan
) {
456 if (src_desc
->channel
[chan
].size
!=
457 dst_desc
->channel
[chan
].size
) {
462 for (chan
= 0; chan
< 4; ++chan
) {
463 enum pipe_swizzle swizzle
= dst_desc
->swizzle
[chan
];
466 if (src_desc
->swizzle
[chan
] != swizzle
) {
469 if ((src_desc
->channel
[swizzle
].type
!=
470 dst_desc
->channel
[swizzle
].type
) ||
471 (src_desc
->channel
[swizzle
].normalized
!=
472 dst_desc
->channel
[swizzle
].normalized
)) {
483 util_format_fits_8unorm(const struct util_format_description
*format_desc
)
488 * After linearized sRGB values require more than 8bits.
491 if (format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_SRGB
) {
495 switch (format_desc
->layout
) {
497 case UTIL_FORMAT_LAYOUT_S3TC
:
499 * These are straight forward.
502 case UTIL_FORMAT_LAYOUT_RGTC
:
503 if (format_desc
->format
== PIPE_FORMAT_RGTC1_SNORM
||
504 format_desc
->format
== PIPE_FORMAT_RGTC2_SNORM
||
505 format_desc
->format
== PIPE_FORMAT_LATC1_SNORM
||
506 format_desc
->format
== PIPE_FORMAT_LATC2_SNORM
)
509 case UTIL_FORMAT_LAYOUT_BPTC
:
510 if (format_desc
->format
== PIPE_FORMAT_BPTC_RGBA_UNORM
)
514 case UTIL_FORMAT_LAYOUT_ETC
:
515 if (format_desc
->format
== PIPE_FORMAT_ETC1_RGB8
)
519 case UTIL_FORMAT_LAYOUT_PLAIN
:
521 * For these we can find a generic rule.
524 for (chan
= 0; chan
< format_desc
->nr_channels
; ++chan
) {
525 switch (format_desc
->channel
[chan
].type
) {
526 case UTIL_FORMAT_TYPE_VOID
:
528 case UTIL_FORMAT_TYPE_UNSIGNED
:
529 if (!format_desc
->channel
[chan
].normalized
||
530 format_desc
->channel
[chan
].size
> 8) {
542 * Handle all others on a case by case basis.
545 switch (format_desc
->format
) {
546 case PIPE_FORMAT_R1_UNORM
:
547 case PIPE_FORMAT_UYVY
:
548 case PIPE_FORMAT_YUYV
:
549 case PIPE_FORMAT_R8G8_B8G8_UNORM
:
550 case PIPE_FORMAT_G8R8_G8B8_UNORM
:
561 util_format_translate(enum pipe_format dst_format
,
562 void *dst
, unsigned dst_stride
,
563 unsigned dst_x
, unsigned dst_y
,
564 enum pipe_format src_format
,
565 const void *src
, unsigned src_stride
,
566 unsigned src_x
, unsigned src_y
,
567 unsigned width
, unsigned height
)
569 const struct util_format_description
*dst_format_desc
;
570 const struct util_format_description
*src_format_desc
;
572 const uint8_t *src_row
;
573 unsigned x_step
, y_step
;
577 dst_format_desc
= util_format_description(dst_format
);
578 src_format_desc
= util_format_description(src_format
);
580 if (util_is_format_compatible(src_format_desc
, dst_format_desc
)) {
585 util_copy_rect(dst
, dst_format
, dst_stride
, dst_x
, dst_y
,
586 width
, height
, src
, (int)src_stride
,
591 assert(dst_x
% dst_format_desc
->block
.width
== 0);
592 assert(dst_y
% dst_format_desc
->block
.height
== 0);
593 assert(src_x
% src_format_desc
->block
.width
== 0);
594 assert(src_y
% src_format_desc
->block
.height
== 0);
596 dst_row
= (uint8_t *)dst
+ dst_y
*dst_stride
+ dst_x
*(dst_format_desc
->block
.bits
/8);
597 src_row
= (const uint8_t *)src
+ src_y
*src_stride
+ src_x
*(src_format_desc
->block
.bits
/8);
600 * This works because all pixel formats have pixel blocks with power of two
604 y_step
= MAX2(dst_format_desc
->block
.height
, src_format_desc
->block
.height
);
605 x_step
= MAX2(dst_format_desc
->block
.width
, src_format_desc
->block
.width
);
606 assert(y_step
% dst_format_desc
->block
.height
== 0);
607 assert(y_step
% src_format_desc
->block
.height
== 0);
609 dst_step
= y_step
/ dst_format_desc
->block
.height
* dst_stride
;
610 src_step
= y_step
/ src_format_desc
->block
.height
* src_stride
;
613 * TODO: double formats will loose precision
614 * TODO: Add a special case for formats that are mere swizzles of each other
617 if (src_format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
||
618 dst_format_desc
->colorspace
== UTIL_FORMAT_COLORSPACE_ZS
) {
620 uint8_t *tmp_s
= NULL
;
625 if (src_format_desc
->unpack_z_float
&&
626 dst_format_desc
->pack_z_float
) {
627 tmp_z
= malloc(width
* sizeof *tmp_z
);
630 if (src_format_desc
->unpack_s_8uint
&&
631 dst_format_desc
->pack_s_8uint
) {
632 tmp_s
= malloc(width
* sizeof *tmp_s
);
637 util_format_unpack_z_float(src_format
, tmp_z
, src_row
, width
);
638 util_format_pack_z_float(dst_format
, dst_row
, tmp_z
, width
);
642 util_format_unpack_s_8uint(src_format
, tmp_s
, src_row
, width
);
643 util_format_pack_s_8uint(dst_format
, dst_row
, tmp_s
, width
);
657 if (util_format_fits_8unorm(src_format_desc
) ||
658 util_format_fits_8unorm(dst_format_desc
)) {
662 if (!src_format_desc
->unpack_rgba_8unorm
||
663 !dst_format_desc
->pack_rgba_8unorm
) {
667 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
668 tmp_row
= malloc(y_step
* tmp_stride
);
672 while (height
>= y_step
) {
673 src_format_desc
->unpack_rgba_8unorm(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
674 dst_format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
682 src_format_desc
->unpack_rgba_8unorm(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
683 dst_format_desc
->pack_rgba_8unorm(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
688 else if (util_format_is_pure_sint(src_format
) ||
689 util_format_is_pure_sint(dst_format
)) {
693 if (util_format_is_pure_sint(src_format
) !=
694 util_format_is_pure_sint(dst_format
)) {
698 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
699 tmp_row
= malloc(y_step
* tmp_stride
);
703 while (height
>= y_step
) {
704 src_format_desc
->unpack_rgba(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
705 dst_format_desc
->pack_rgba_sint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
713 src_format_desc
->unpack_rgba(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
714 dst_format_desc
->pack_rgba_sint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
719 else if (util_format_is_pure_uint(src_format
) ||
720 util_format_is_pure_uint(dst_format
)) {
722 unsigned int *tmp_row
;
724 if (!src_format_desc
->unpack_rgba
||
725 !dst_format_desc
->pack_rgba_uint
) {
729 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
730 tmp_row
= malloc(y_step
* tmp_stride
);
734 while (height
>= y_step
) {
735 src_format_desc
->unpack_rgba(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
736 dst_format_desc
->pack_rgba_uint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
744 src_format_desc
->unpack_rgba(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
745 dst_format_desc
->pack_rgba_uint(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
754 if (!src_format_desc
->unpack_rgba
||
755 !dst_format_desc
->pack_rgba_float
) {
759 tmp_stride
= MAX2(width
, x_step
) * 4 * sizeof *tmp_row
;
760 tmp_row
= malloc(y_step
* tmp_stride
);
764 while (height
>= y_step
) {
765 src_format_desc
->unpack_rgba(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, y_step
);
766 dst_format_desc
->pack_rgba_float(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, y_step
);
774 src_format_desc
->unpack_rgba(tmp_row
, tmp_stride
, src_row
, src_stride
, width
, height
);
775 dst_format_desc
->pack_rgba_float(dst_row
, dst_stride
, tmp_row
, tmp_stride
, width
, height
);
784 util_format_translate_3d(enum pipe_format dst_format
,
785 void *dst
, unsigned dst_stride
,
786 unsigned dst_slice_stride
,
787 unsigned dst_x
, unsigned dst_y
,
789 enum pipe_format src_format
,
790 const void *src
, unsigned src_stride
,
791 unsigned src_slice_stride
,
792 unsigned src_x
, unsigned src_y
,
793 unsigned src_z
, unsigned width
,
794 unsigned height
, unsigned depth
)
797 const uint8_t *src_layer
;
801 dst_layer
+= dst_z
* dst_slice_stride
;
802 src_layer
+= src_z
* src_slice_stride
;
803 for (z
= 0; z
< depth
; ++z
) {
804 if (!util_format_translate(dst_format
, dst_layer
, dst_stride
,
806 src_format
, src_layer
, src_stride
,
811 dst_layer
+= dst_slice_stride
;
812 src_layer
+= src_slice_stride
;
817 void util_format_compose_swizzles(const unsigned char swz1
[4],
818 const unsigned char swz2
[4],
819 unsigned char dst
[4])
823 for (i
= 0; i
< 4; i
++) {
824 dst
[i
] = swz2
[i
] <= PIPE_SWIZZLE_W
?
825 swz1
[swz2
[i
]] : swz2
[i
];
829 void util_format_apply_color_swizzle(union pipe_color_union
*dst
,
830 const union pipe_color_union
*src
,
831 const unsigned char swz
[4],
832 const boolean is_integer
)
837 for (c
= 0; c
< 4; ++c
) {
839 case PIPE_SWIZZLE_X
: dst
->ui
[c
] = src
->ui
[0]; break;
840 case PIPE_SWIZZLE_Y
: dst
->ui
[c
] = src
->ui
[1]; break;
841 case PIPE_SWIZZLE_Z
: dst
->ui
[c
] = src
->ui
[2]; break;
842 case PIPE_SWIZZLE_W
: dst
->ui
[c
] = src
->ui
[3]; break;
844 dst
->ui
[c
] = (swz
[c
] == PIPE_SWIZZLE_1
) ? 1 : 0;
849 for (c
= 0; c
< 4; ++c
) {
851 case PIPE_SWIZZLE_X
: dst
->f
[c
] = src
->f
[0]; break;
852 case PIPE_SWIZZLE_Y
: dst
->f
[c
] = src
->f
[1]; break;
853 case PIPE_SWIZZLE_Z
: dst
->f
[c
] = src
->f
[2]; break;
854 case PIPE_SWIZZLE_W
: dst
->f
[c
] = src
->f
[3]; break;
856 dst
->f
[c
] = (swz
[c
] == PIPE_SWIZZLE_1
) ? 1.0f
: 0.0f
;
863 void pipe_swizzle_4f(float *dst
, const float *src
,
864 const unsigned char swz
[4])
868 for (i
= 0; i
< 4; i
++) {
869 if (swz
[i
] <= PIPE_SWIZZLE_W
)
870 dst
[i
] = src
[swz
[i
]];
871 else if (swz
[i
] == PIPE_SWIZZLE_0
)
873 else if (swz
[i
] == PIPE_SWIZZLE_1
)
878 void util_format_unswizzle_4f(float *dst
, const float *src
,
879 const unsigned char swz
[4])
883 for (i
= 0; i
< 4; i
++) {
902 util_format_snorm8_to_sint8(enum pipe_format format
)
905 case PIPE_FORMAT_R8_SNORM
:
906 return PIPE_FORMAT_R8_SINT
;
907 case PIPE_FORMAT_R8G8_SNORM
:
908 return PIPE_FORMAT_R8G8_SINT
;
909 case PIPE_FORMAT_R8G8B8_SNORM
:
910 return PIPE_FORMAT_R8G8B8_SINT
;
911 case PIPE_FORMAT_R8G8B8A8_SNORM
:
912 return PIPE_FORMAT_R8G8B8A8_SINT
;
914 case PIPE_FORMAT_A8_SNORM
:
915 return PIPE_FORMAT_A8_SINT
;
916 case PIPE_FORMAT_L8_SNORM
:
917 return PIPE_FORMAT_L8_SINT
;
918 case PIPE_FORMAT_L8A8_SNORM
:
919 return PIPE_FORMAT_L8A8_SINT
;
920 case PIPE_FORMAT_I8_SNORM
:
921 return PIPE_FORMAT_I8_SINT
;
923 case PIPE_FORMAT_R8G8B8X8_SNORM
:
924 return PIPE_FORMAT_R8G8B8X8_SINT
;
925 case PIPE_FORMAT_R8A8_SNORM
:
926 return PIPE_FORMAT_R8A8_SINT
;
927 case PIPE_FORMAT_G8R8_SNORM
:
928 return PIPE_FORMAT_G8R8_SINT
;
929 case PIPE_FORMAT_A8B8G8R8_SNORM
:
930 return PIPE_FORMAT_A8B8G8R8_SINT
;
931 case PIPE_FORMAT_X8B8G8R8_SNORM
:
932 return PIPE_FORMAT_X8B8G8R8_SINT
;